@article{05875544,
title = {On a possibility of generalization of the Hopf lemma to the case of the Navier-Stokes system with nonzero flows.},
journal = {Sibirskij Matematicheskij Zhurnal},
volume = {50},
year = {2009},
pages = {831-835},
zbl = {1224.35315},
language = {en},
url = {http://dml.mathdoc.fr/item/05875544}
}
Illarionov, A.A. On a possibility of generalization of the Hopf lemma to the case of the Navier-Stokes system with nonzero flows.. Sibirskij Matematicheskij Zhurnal, Tome 50 (2009) pp. 831-835. http://gdmltest.u-ga.fr/item/05875544/